Home / 71,222.10-98,284.80-39,390.32

Finding the Fourth Proportional to 71,222.10, 98,284.80 and 39,390.32

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Solution

The fourth proportional to 71,222.10, 98,284.80 and 39,390.32 is: 54,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,222.10 : 98,284.80 = 39,390.32 : x
  2. Step 2: Convert to fraction form
    71,222.10/98,284.80 = 39,390.32/x
  3. Step 3: Cross multiply
    71,222.10x = 98,284.80 × 39,390.32
  4. Step 4: Simplify right side
    71,222.10x = 3,871,469,723.14
  5. Step 5: Solve for x
    x = 3,871,469,723.14/71,222.10
  6. Step 6: Final answer
    x = 54,357.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.